Stats: Data and Models (3rd Edition)

Published by Pearson
ISBN 10: 0321692551
ISBN 13: 978-0-32169-255-9

Chapter 22 - Comparing Two Proportions - Exercises - Page 541: 5


See below.

Work Step by Step

To use the two-proportion z-test we need the two samples to be independent. Here we cannot use the test because the two samples contain data about the same people and thus are not independent.
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